Jan Kolhorn
Sales at Oktras
Randstad, Netherlands
Summary
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RockstarJan Kolhorn is a sales professional based in the Randstad with six years of formal experience and a long track record in client-facing and training roles dating back to 2003. He currently works in sales at Oktras and previously combined instruction and safety advisory work as a docent/veiligheidsadviseur, giving him strong communication and stakeholder-management skills. Outside his day job he contributes to open-source education in Python—helping implement and refine Exercism concept and practice exercises—which highlights a practical coding aptitude and attention to documentation and test quality. That mix of sales, training, and hands-on contribution to developer learning suggests he excels at translating technical concepts for diverse audiences and improving developer onboarding experiences. An approachable collaborator, he brings both operational experience and a curiosity for developer tools (and apparently a fondness for cheese).
6 years of coding experience
Github Skills (6)
data-structures10
data-dictionary10
python10
data-structure10
tracks9
pause8
Programming languages (4)
Github contributions (5)
exercism/python
May 2020 - Mar 2022
Exercism exercises in Python.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:118 reviews, 31 commits, 86 PRs in 1 year 9 months
Contributions summary:Jan contributed to the implementation of a new Concept Exercise focused on dictionaries, including adding example code, tests, and documentation. The commits also included updates to existing concept exercises, specifically for currency-exchange and card-games, refining functionality and addressing code quality. Furthermore, the user's contributions extended to practice exercises such as affine cipher, and others, showcasing their involvement in maintaining and enhancing the project's educational content through code and documentation updates.
exercismpythonexercism-exercisesexercism-trackcommunity-contributions-paused
J08K/python
Sep 2021 - May 2023
Exercism exercises in Python.
Contributions:84 pushes, 6 branches in 1 year 7 months
pythonexercism-exercisespython3python2exercism
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